LIF diagnostics of hydroxyl radical in atmospheric pressure He-H2O dielectric barrier discharges

被引：62
|
作者：
Dilecce, G. [1 ]
Ambrico, P. F. [1 ]
Simek, M. [2 ]
De Benedictis, S. [1 ]
机构：
[1] UOS Bari, CNR, Ist Metodol Inorgan & Plasmi, I-70125 Bari, Italy
[2] Acad Sci Czech Republ, Inst Plasma Phys, Prague 18200, Czech Republic
来源：
CHEMICAL PHYSICS | 2012年 / 398卷
关键词：
Spectroscopic techniques; Plasma diagnostics; LIF; OH; Dielectric barrier discharge; VIBRATIONAL-ENERGY TRANSFER; OH RADICALS; (2)SIGMA(+); PLASMA; A2-SIGMA+; DYNAMICS; STATE;
D O I：
10.1016/j.chemphys.2011.03.012
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
In this paper we present laser induced fluorescence (LIF) measurements of OH relative density in a He-H2O atmospheric pressure dielectric barrier discharge, with an estimation of the absolute density based on the quantitative analysis of the LIF signal and on the decay of OH density in the post-discharge. The possible interference of H2O2 photo-dissociation is discussed and finally excluded. Densities of the order of 10(13) cm(-3) have been estimated in mixtures with water vapour content ranging from 2.3 to 23 Torr partial pressure. LIF diagnostic characteristics and sensitivity in the OH case at atmospheric pressure are discussed in comparison with absorption techniques. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：142 / 147
页数：6
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